package practice.w917;

import java.util.ArrayList;
import java.util.Collection;

public class CollectionDemo2 {
    public static void main(String[] args)
    {
        Collection c = new ArrayList();
        c.add(new Point(1,2));
        c.add(new Point(3,4));
        c.add(new Point(5,6));
        c.add(new Point(7,8));
        boolean b =c.add(new Point(1,2));
        System.out.println(b);
        System.out.println(c);
        Point p =new Point(1,2);
        boolean contains =c.contains(p);
        System.out.println(contains);
        boolean remove = c.remove(p);
        System.out.println("是否删除:"+remove);
        System.out.println(c);


//        Collection c = new ArrayList();
//        c.add(new Point(1,2));
//        c.add(new Point(3,4));
//        c.add(new Point(5,6));
//        c.add(new Point(7,8));
//        boolean b =c.add(new Point(1,2));
//        System.out.println(b);
//        System.out.println(c);
//        Point p =new Point(1,2);
//        boolean contains =c.contains(p);
//        System.out.println(contains);
//        boolean remove = c.remove(p);
//        System.out.println("是否删除:"+remove);
//        System.out.println(c);


    }
}
